98557816931 has 48 divisors (see below), whose sum is σ = 123573081600. Its totient is φ = 78088082688.

The previous prime is 98557816901. The next prime is 98557816933. The reversal of 98557816931 is 13961875589.

It is not a de Polignac number, because 98557816931 - 2¹⁰ = 98557815907 is a prime.

It is a super-2 number, since 2×98557816931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (98557816933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20033690 + ... + 20038608.

It is an arithmetic number, because the mean of its divisors is an integer number (2574439200).

Almost surely, 2^98557816931 is an apocalyptic number.

98557816931 is a deficient number, since it is larger than the sum of its proper divisors (25015264669).

98557816931 is a wasteful number, since it uses less digits than its factorization.

98557816931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376 (or 5369 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 62.

The spelling of 98557816931 in words is "ninety-eight billion, five hundred fifty-seven million, eight hundred sixteen thousand, nine hundred thirty-one".